linux-kernel - Re: [PATCH 1/4] dt-bindings: usb: add TUSB320xA Type-C port controller

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Date:   Wed, 2 Mar 2022 12:16:33 -0600
From:   Rob Herring <robh@...nel.org>
To:     Alvin Šipraga <alvin@...s.dk>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        �ipraga <alsi@...g-olufsen.dk>,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] dt-bindings: usb: add TUSB320xA Type-C port
 controller

On Tue, Mar 01, 2022 at 02:20:05PM +0100, Alvin Šipraga wrote:
> From: Alvin Šipraga <alsi@...g-olufsen.dk>
> 
> The TUSB320xA is a non-PD Type-C port controller managed over I2C.
> 
> Signed-off-by: Alvin Šipraga <alsi@...g-olufsen.dk>
> ---
>  .../devicetree/bindings/usb/ti,tusb320xa.yaml | 78 +++++++++++++++++++
>  1 file changed, 78 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/ti,tusb320xa.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/ti,tusb320xa.yaml b/Documentation/devicetree/bindings/usb/ti,tusb320xa.yaml
> new file mode 100644
> index 000000000000..a93d53ddd01c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/ti,tusb320xa.yaml
> @@ -0,0 +1,78 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/ti,tusb320xa.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TUSB320xA Type-C port controller DT bindings
> +
> +description:
> +  The Texas Instruments TUSB320xA is a USB Type-C port controller which
> +  supports role and plug orientation detection using the CC pins. It is
> +  compatible with the USB Type-C Cable and Connector Specification v1.1.
> +
> +maintainers:
> +  - Alvin Šipraga <alsi@...g-olufsen.dk>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - ti,tusb320la
> +      - ti,tusb320ha
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  ports:
> +    $ref: /schemas/graph.yaml#/properties/ports
> +
> +    patternProperties:
> +      '^port@':

Exact port numbers need to be defined. What does port@0 represent? 
port@1?

> +        $ref: /schemas/graph.yaml#/properties/port
> +        description:
> +          OF graph bindings modelling any "usb-role-switch" or "accessory" mux.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      tcpc@47 {
> +        compatible = "ti,tusb320la";
> +        reg = <0x47>;
> +        interrupt-parent = <&gpio5>;
> +        interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
> +
> +        ports {
> +          #address-cells = <1>;
> +          #size-cells = <0>;
> +
> +          port@0 {
> +            reg = <0>;
> +            typec1_mux: endpoint {
> +              remote-endpoint = <&usb_audio_mux1>;
> +            };
> +          };
> +
> +          port@1 {
> +            reg = <1>;
> +            typec1_dr_sw: endpoint {
> +              remote-endpoint = <&usbotg1_drd_sw>;
> +            };
> +          };
> +        };
> +      };
> +    };
> -- 
> 2.35.1
>